In Ukraine there is a "Unified Vacancy Portal" https://jobportal.dcz.gov.ua/

 It allows you to find job information according to region, industry or direction, expected salary level. New vacancies appear on the portal every day in real time and are as relevant as possible.

 You can subscribe to vacancies by industry and region through the chatbot of the State Employment Service in Telegram https://t.me/DCZWorkNowBbot